Tenon-extractor



(No Model.)

o. HENpRIGK. TBNON BXTRAGTOR;

No. 295,170. Patented MM, 18, 1884.'

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OBADIAH HENDRICK, OF MACGN, MISSISSIPPI.

vTENON-EXTRACTC) R.

SPECIFICATION forming part of Letters Patent No. 295,170,6.ated March. 18, 1884:.

Application filed July 21, 1883.

To @ZZ whom, t may concern.-

Be it known that I, OBADIAH HENDRIGK, a citizen of the United States, residing at Macon, in the county of Noxnbee and State of Mississippi, have invented a new and useful 'Benen-Extractor, ot'which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved apparatus or device for removing broken-oii'tenons from the hubs of vehicle-wheels; and it has for its object to produce a simple and inexpensive device by which this may be accomplished rapidly, easily, and with less danger ol' injuring the hub than by chiseling the brolreiroi'f pieces ont, as is commonly practired, as will be hereinafter fully described, and particularly pointed out in the claims. In the drawings hereto annexed, Figure l is a side view ot' my improved tenen-extractor, and Figs. 2 and 3 are sectional views illustrating the operation ofthe saine.

The same letters refer to the same parts in all the figures. y A in the drawings designates the body of my improved tenonextractor, which consists of a stem or shank having its upper end squared, as at B, so as to adapt it to be used in an ordinary brace, and terminating atitslower end in a cylindrical bit, C, having a spiral 'flange or thread, D, the upper edge of which is square or at right 'angles to the vertical axis ot'thebit, as shown. The lower end of the bit C ends in asmooth and blunt point, E.

The operation of my invention will be readily understood by referring to the drawings hereto annexed. Vlhen the spokes of a wheel are broken, and it is desired to remove the tenons from the mortises in the hub in order to repair the wheel, -I tirst bore a'hole in the tenori reaching to the axle-box, and of slightly smaller diameter than the cylindrical bit C. This hole or opening` is shown at F in Fie. 2. Placing the extractor A in an ordinary brace, 45 the nextstep is to screw it into the opening (No model.)

F until its blunt end E rests and bears against the axle-box, as shown in Fig. 3 of thedrawings. By continuing the revolution of the extractor the counter-pressure exerted by the square spiral flange against the tenen will 5o loosen the latter and drive it out of the mortise, as indicated in Fig. 3. This operation may be accomplished iu a very short time, and without any possibility of injury to the hub, which is always liable to occur when the 5 5 tenon ends are ohiseled out, as ordinarily practiced.

I claim as my invention and desire to se cure by Letters Patent of the United Statesl. The herein-described device for extract- 6o ing broken-off tenons from the hubs of vehicle-wheels, the same consisting of a stem or shank squared at its upper end for insertion into a brace, and having at itslower end a cylindrical bit with a smooth blunt point, and 65 provided with a spiral iange or thread, the upper edge of which is square, or at right angles to the vertical axis of the bit, substantially as and for the purpose herein shown and specined.

2. The herein-described process of extracting broken-oft tenons from the hubs ot' vehicle-wheels, the same consisting in first bcring through the said tenon a hole extending to the axle-box, and next driving into the 75 said hole a screw-threaded or spirally-iianged bit of slightly larger diameter than the said hole, and continuing the revolution of the said bit when it reaches and presses against the axle-box, whereby the counter-pressure thus 8o generated shall serve to drive the tenen out of the mortise, substantially as set forth.

In testimony that I claim theforegoing as my own I have hereto aixed my signature in presence of two witnesses.

OBADIAH HENDRICK.

" \Vitnesses:

RUDOLPH HAUnNsri-HN, ROBERT JEFFERSON ELLISON. 

